Natural Product Research 2019-Oct
Secondary metabolites from Diaporthe lithocarpus isolated from Artocarpus heterophyllus.
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Fractionation and purification of the ethyl acetate extract of Diaporthe lithocarpus, an endophytic fungus from the leaves of Artocarpus heterophyllus, yielded one new compound, diaporthindoic acid (1), along with seven known compounds (2-8). The new compound was characterized and established by the basis of extensive spectroscopic methods including NMR (1D and 2D) and HRMS. Compound 6 showed the best citotoxicity against murine leukemia P-388 cells with an IC50 value of 0.41 μg/mL. All compounds (1-8) were also tested for their antimicrobial activities. To the best of our knowledge, this is the first chemical evaluation of fungal Diaporthe derived from Artocarpus.